FFIV has seen an after-hours earnings-driven gain in 25 of the
38 quarters we've tracked in our database and 17 times recorded a
more aggressive upside move in next-day regular session trade, or
68% of the time.

The stock has declined in 13 after-hours moves, and added to
that downside seven times in next-day action, or 54% of the
time.

FFIV is due with its Q1 results in tonight's after-hours
session, and analysts polled by Capital IQ expect the company to
post a profit of $1.19 per share on revenue of $396.4 million.

Here's the post-earnings after-hours history:

On Oct. 23, 2013, FFIV gained 3.9% in night trade after posting
a Q4 beat and mixed guidance. The stock reversed direction the
following day, ending the Oct. 24 regular session down 1.2%.

On July 24, 2013, FFIV advanced 5.9% in after-hours trade after
posting better-than-expected results and guidance. The stock added
to its upside the next day, closing the July 25 regular session up
7.2%.

On April 24, 2013, FFIV edged up 0.2% in night trade on the back
of mixed results and guidance. The stock firmed higher the next
day, ending up 3.5% in the April 25 regular session.

On July 18, 2012, FFIV declined 1% in evening trade after
meeting Q3 estimates and setting Q4 guidance below the Street view.
The stock reversed direction the next day, ending up 4.2%

On April 18, 2012, FFIV advanced 7.3% in night trade after
beating on Q2 and guiding in line for Q3. The stock firmed higher
the next day, closing the April 19 regular session up 7.8%.

On Jan. 18, 2012, FFIV gained 6.6% in after-hours action after
topping Q1 estimates and setting its Q2 view in-line to above
Street estimates. The stock added to its upside the following day,
rising 10.6% by the close on Jan. 19.

On Oct. 25, 2011, FFIV advanced 7.5% in night trade on the back
of better-than-expected results and in-line guidance. The stock
jumped even higher the next day, closing the Oct. 26 regular
session up 14%.

On July 20, 2011, FFIV slumped 7.5% in evening trade after
meeting Q3 revenue estimates, beating on EPS, and guiding in-line
for Q4. The stock headed deeper south the next day, closing the
July 21 regular session down 11.2%.

On April 20, 2011, the stock jumped 12.7% in after-hours trading
following an earnings beat and guidance that straddled the Street
view. Shares were up a less-aggressive 7.1% the next day.

On Jan. 19, 2011, FFIV plummeted 22% in after-hours action after
missing Q1 revenue expectations and setting its Q2 revenue view
below Street estimates. The stock held most of its declines in the
following day's regular session, ending off 21.3% on Jan. 20.

On July 21, 2010, the stock gained 6.7% in evening trading after
a Q3 beat and Q4 guidance set above the Street view. Shares jumped
14% the next day.

On April 21, 2010, the stock fell 3.2% despite a Q2 earnings
beat. Shares rose 7.2% the next day.

On Jan. 20, 2010, the stock was up 1.2% after beating with
earnings, guidance. Shares were up 3% the next day.

On Oct. 21, 2009, the stock gained 7.7% in evening hours after
reporting a Q4 beat and guiding above the Street for Q1. The stock
doubled its evening gain, rising 15.5% the next day.

On July 22, 2009, FFIV gained 3.4% in evening trade after
reporting better-than-expected Q3 results and Q4 guidance. The
stock went higher the following day, ending the July 23 regular
session up 4.7%.

On April 22, 2009, the stock fell 3.6% after meeting Q2
expectations and guiding in line for Q3. Shares fell a deeper 4.3%
the next day.

On Jan. 21, 2009, FFIV advanced 7.5% in after-hours trade after
reporting results in line with Street estimates. It lost a good
portion of that gain the next day, closing the Jan. 22 regular
session up 3.8%.

On Oct. 22, 2008, the stock jumped 12.4% after an earnings beat
and in-line revenue. The gain was trimmed to 10% the following
day.

On July 23, 2008, FFIV declined 5.7% in evening trade despite
topping Q3 expectations. It reversed course the following day,
rising 3.6% by the regular session close on July 24.

On April 23, 2008, FFIV advanced 6.8% in after-hours trade on
better-than-expected Q2 results. It saw that gain cut back just a
bit in the April 24 regular session, ending up 6.2%.

On Jan. 23, 2008, FFIV charged 20% higher in night trade after
blowing past earnings expectations and guiding its forward profits
well above the then-current Street consensus. The stock firmed even
higher on Jan. 24, closing with a 22.9% rise.

On Oct. 24, 2007, FFIV was hit for an 8.9% decline in night
trade after issuing earnings guidance that was below Street
estimates. The stock tumbled further the next day, down 15.5% by
the close.

On July 25, 2007, FFIV fell 2.1% in evening hours when the
company topped Q3 earnings estimates but missed on sales. Shares
eased a bit further the next day to close the regular session down
2.7%.

On April 25, 2007, FFIV advanced 16.1% in after-hours trade
after beating on Q2 and setting its Q3 guidance to match or top the
Street. Buyers continued to pile into the shares the next day,
boosting FFIV 21% by the April 26 closing bell.

On Jan. 24, 2007, FFIV dropped 6% in night trade after topping
Q1 sales estimates but missing on EPS and forecasting Q2 EPS below
expectations. However, shares recovered most of their losses the
next day, ending the regular session down only 0.6%.

On Oct. 25, 2006, the stock jumped 10.5% in the evening hours
after the company beat with Q4 results and guided higher. Shares
gained 14.6% the next day.

On July 20, 2006, shares fell 6.1% in the evening hours after
the company reported ahead with Q3 but said it expects a
restatement. The loss was 7.5% the next day.

In April 20, 2006, FFIV slid 14.4% in after-hours trade when the
company missed Q2 estimates and guides Q3 lower. The shares
rebounded slightly the next day, ending the regular session down
11.5%.

On January 19, 2006, FFIV rose 4.2% in night trade after beating
Q1 expectations and guiding Q2 above Street views. However, the
shares lost some steam and closed the next day session up 3.5%.

On Oct. 25, 2005, FFIV soared 16.3% in evening trade after the
company topped Q4 forecasts and set its Q1 view above expectations.
Bulls piled into the issue on Oct. 26, goosing it 23.5% between the
bells.

On July 20, 2005, FFIV ended the evening session down 5.5%
despite better-than-expected Q3 result and a bullish Q4 outlook.
The shares widened their losses the next day, sinking 17.7% in
regular hours trade.

On April 20, 2005 FFIV declined 6.1% in after-hours trade after
the company beat expectations and guided ahead of the Street. It
trimmed much of those declines on April 21 as the stock ended the
regular session down a slight 0.07%.

On Jan. 19, 2005, FFIV blew past its Q1 expectations and guided
for a strong Q2. The stock jumped 4.8% in that night's after-hours
session, only to see a lofty follow-on upside on Jan. 20 with the
issue closing the regular session up 13.5%.

On July 21, 2004, FFIV beat Street estimates and the stock added
6.7% in after-hours trade. It climbed higher July 22, ramping up
14.6% by the end of bell-to-bell trade.

The stock failed to generate much enthusiasm the evening of
April 21, 2004 edging up 0.3% on strong results and bullish
guidance. It slipped into the red in next-day trade, losing about
2.3% by the close.

The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of The NASDAQ OMX Group, Inc.

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